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Proceedings Paper

Performances of pregrooved phase-change rewritable media in the 680-nm laser diode system
Author(s): Takeo Ohta; Kazumi Yoshioka; Tetsuya Akiyama; Stephen F. Heil; Yuji Takagi; Tomio Yoshida
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Paper Abstract

The performances of the pregrooved Phase Change Rewritable (PCR) media have been measured by using an test drive which optical head have a 680 nm laser diode and focus lens with numerical aperture of 0.55. The write/read characteristics and groove parameters have been measured. The linear density of 1.42 Kbits/mm by using Pulse Position (PPM) recording method and track pitch of less than 1 micrometers are expected to be realized.

Paper Details

Date Published: 12 October 1994
PDF: 5 pages
Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); doi: 10.1117/12.190175
Show Author Affiliations
Takeo Ohta, Matsushita Electric Industrial Co., Ltd. (Japan)
Kazumi Yoshioka, Matsushita Electric Industrial Co., Ltd. (Japan)
Tetsuya Akiyama, Matsushita Electric Industrial Co., Ltd. (Japan)
Stephen F. Heil, Panasonic Technologies, Inc. (Japan)
Yuji Takagi, Matsushita Electric Industrial Co., Ltd. (Japan)
Tomio Yoshida, Matsushita Electric Industrial Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 2338:
1994 Topical Meeting on Optical Data Storage
David K. Campbell; Martin Chen; Koichi Ogawa, Editor(s)

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